BIOREMEDIATION OF DOMESTIC LIQUID WASTES ON CAMPUS USING ECO-ENZYME

Abstract

Eco-Enzyme (EE) is a liquid product produced from the fermentation process of vegetable and fruit waste with a sugar or molasses substrate, which is currently being developed to process domestic liquid waste in an environmentally friendly manner. In this research, eco enzyme stock was made from a mixture of vegetable waste and orange peel, with the formula of 1:3:10 (molasses: waste: EE). This research aims to treat domestic wastewater on the UIN Jakarta campus using EE with modifications. Variations of EE stock solutions tested were concentrations of 10%, 20%, and 30%, with an incubation time of 21 days. Wastewater samples were taken from 5 sampling locations on campus. The parameters tested include physical, chemical, and biological parameters and then compared with the quality standards issued by the Minister of the Environment Regulation Republic of Indonesia No. P.68/2016. The study's findings indicate that, at concentrations of 10%–30%, EE is less than ideal for improving domestic wastewater quality and does not function as a bioremediation agent. With increasing EE concentration, dissolved oxygen and pH values dropped, and 10% EE treatment for 21 days of incubation revealed a modest increase. On the other hand, when EE concentration rises, so do the values for total dissolved solids, turbidity, and conductivity. It was determined that lower EE concentrations are anticipated to have greater potential as a bioremediator for domestic liquid waste.